appwrite/app/config/platform.php

<?php

use Utopia\System\System;

// For now, take first domain as primary (for previews)
// Later-on this can become platform-specific with new env var (appwrite=this,imagine=that)
$sitesDomain = System::getEnv('_APP_DOMAIN_SITES', '');
if (\str_contains($sitesDomain, ',')) {
    $sitesDomain = explode(',', $sitesDomain)[0];
}
$functionsDomain = System::getEnv('_APP_DOMAIN_FUNCTIONS', '');
if (\str_contains($functionsDomain, ',')) {
    $functionsDomain = explode(',', $functionsDomain)[0];
}

/**
 * Platform configuration
 */
return [
    'apiHostname' => System::getEnv('_APP_DOMAIN', 'localhost'),
    'consoleHostname' => System::getEnv('_APP_CONSOLE_DOMAIN', System::getEnv('_APP_DOMAIN', 'localhost')),
    'hostnames' => array_filter(array_unique([
        System::getEnv('_APP_DOMAIN', 'localhost'),
        System::getEnv('_APP_CONSOLE_DOMAIN', 'localhost'),
        System::getEnv('_APP_MIGRATION_HOST'),
    ])),
    'platformName' => APP_EMAIL_PLATFORM_NAME,
    'logoUrl' => APP_EMAIL_LOGO_URL,
    'accentColor' => APP_EMAIL_ACCENT_COLOR,
    'footerImageUrl' => APP_EMAIL_FOOTER_IMAGE_URL,
    'twitterUrl' => APP_SOCIAL_TWITTER,
    'discordUrl' => APP_SOCIAL_DISCORD,
    'githubUrl' => APP_SOCIAL_GITHUB,
    'termsUrl' => APP_EMAIL_TERMS_URL,
    'privacyUrl' => APP_EMAIL_PRIVACY_URL,
    'websiteUrl' => 'https://' . APP_DOMAIN,
    'emailSenderName' => APP_EMAIL_PLATFORM_NAME,
    'sitesDomain' => $sitesDomain,
    'functionsDomain' => $functionsDomain,
];